共查询到19条相似文献,搜索用时 140 毫秒
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从前置处理、数值计算及后置处理三个方面出发,着重介绍可视化技术在电阻点焊过程数值分析软件中的应用。采用面向对象技术、可视化技术和人机交互技术等相结合,开发了电阻点焊过程数值模拟系统Visual SSRSW。该软件具有可视化的前后置处理模块,在前置处理中通过交互式的图形输入界面使用户能够方便、快捷的建立求解模型,在后置处理中能够将计算结果以图形方式直观地显示。 相似文献
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数值鼠标技术在凝固模拟中的应用 总被引:1,自引:0,他引:1
在凝固模拟技术中,后处理的任务通常是将数值数据可视化,构建出各种直观的三维图形,帮助用户理解数值计算的结果。这个环节在凝固模拟的应用中发挥着重要作用。但是,由于视觉识别对色彩和长度等图形要素定量分辨的精度非常有限,因此,直接从图形上很难准确地解读出所表现的物理函数的精确值。本文采取扩展鼠标光标的形式。将图形上鼠标所指热点单元的函数值,用数值数字直接显示在鼠标光标的扩展序列中,实现了图形函数数值的精确解读,取得了非常好的应用效果,受到用户的好评。 相似文献
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铝硅合金硅相演变及其对力学性能的影响 总被引:19,自引:8,他引:11
用SEM观察Al-Si合金中富硅相在固溶过程中形貌的演变。结果表明:固溶初期,硅相发生缩颈、钝化、溶断并伴随长大;随后硅相的长大是受扩散控制的粗化过程,且符合LSW粗化模型;固溶后期,硅相形貌恶化出现棱角小面和搭接特征。通过定量金相测量及回归分析,硅相的形态对合金的力学性能影响显著。 相似文献
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基于体视学原理的钛合金显微组织定量分析 总被引:3,自引:0,他引:3
钛合金显微组织的多样性给定量金相学研究带来了很大困难.在分析钛合金金相学特点及热变形中显微组织演变机制的基础上,应用体视学和定量金相学的方法,结合图形的数学运算,初步建立了一套针对钛合金不同典型显微组织特征参数的定量测量分析模型与方法,为定量化研究钛合金显微组织的演变以及组织与性能之间的关系进行了探索性工作.该定量分析模型与方法具有较强的可行性,实现了包括相的体积分数、β晶粒大小、魏氏组织中α条的厚度、丛域尺寸及网篮等多种类型组织中α相的尺寸、形态、位向分布等显微特征的参数化定量描述与分析.同时,提出了对网篮等多种类型组织中α相的计算机图像处理技术——手工分离α相的原则,有效地实现了α相的图像"解体".并给出了上述显微组织特征定量分析的实例. 相似文献
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D. van Loyen 《工业材料与腐蚀》1994,45(8):459-466
Influence of soft storage reservoir water on inhibiting effect of polycarboxylic acids It was the intention of the project to examine the influence of soft storage reservoir water on the inhibiting effect of polycarboxylic acids on unalloyed steel, copper and AlMgSi0.5. For the investigations circuit equipments consisting of rotating thermostats and in series coupled tube test pieces were used. Several inhibitor mixtures were tested in synthetic waters of different composition and in storage reservoir water in dependence on temperature and flow velocity. At unalloyed steel tests were carried out on behaviour with heat transfer. The criterion of interpretation was first of all the weight loss rate per unit area. Furthermore, the specimens are visually estimated and metallographical examined. Polyacrylates and copolymeres alone do not sufficient retard the corrosion of unalloyed steel in soft storage reservoir water. A distinguished inhibition effect is obtained by simultaneous addition of molybdate and phosphonate. A further addition of copper inhibitors on basis of tolyltriazole renders possible the mixed installation of unalloyed steel, copper and AlMgSi 0.5 in half-open circuits. The weight loss rate of unalloyed steel was diminished to values < 0.01 mm/a. The dependence of the weight loss rate on temperature (35/60°C) and flow velocity (0.5 to 2 m/s) is small. The weight loss rate of copper is diminished to < 0.0001 mm/a. The weight loss rate of AlMgSi0.5 with and without inhibitor is about 0.003 mm/a. By visual estimation and metallographic examination local corrosion could not be determined. The behaviour of unalloyed steel with heat transfer from the metal to the inhibited medium is characterized by an increase in weight loss rate. 相似文献
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采用化学分析、金相检验和扫描电镜分析等方法,对CSP热轧薄板边部出现开裂的原因进行了分析。结果表明,CSP薄板坯边部集中分布的大颗粒Al2O3夹杂物是导致板坯在轧制过程中边部发生开裂的主要原因。 相似文献